BW K091833 | Genuine Bendix® AD-9SI Air Dryer 12V / 75W

Remove moisture from compressed air

• Prevents water buildup that can cause corrosion and freezing.

Protect air brake system

• Keeps valves, air lines, and brake chambers working reliably.

Prevent air system freezing

• Especially important in cold weather where moisture can freeze in lines.

Filter oil and contaminants

• Removes compressor oil and debris from the air supply.

Extend component life

• Reduces wear and damage to air system parts.

Maintain proper air pressure

• Helps the system build and hold air pressure efficiently.

Excess moisture in air tanks

• Water drains from tanks more than normal

Air system freezing

• Frozen air lines or valves, especially in cold weather

Slow air pressure build-up

• Takes longer than normal to reach operating pressure

Frequent or constant purging

• Dryer purges too often or doesn’t stop purging

Air leaks

• Hissing sounds around the air dryer or purge valve

Low air pressure warnings

• Dashboard air pressure light or buzzer activates

Brake performance issues

• Brakes feel slow to apply or release

Oil or debris in air system

• Contaminants found in air tanks or valves